Pension, OPEB and Savings Plans (Schedule Of Amount Paid For Employer Matching Contributions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	$ 43	$ 40	$ 41
PSEG Power LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	10	10	10
Public Service Electric and Gas Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	27	25	26
Other [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	$ 6	$ 5	$ 5